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Tap water quality report

Gswc - Bell, Bell Gardens

EPA monitoring tested this supplier for 108 contaminants and detected 30. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
30
detected
55,050
people served
6
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Private
Counties served
Los Angeles

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

6
health-based violations
6
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-05-01 → 2010-05-31
MCL Health-based Resolved 2010-05-01 → 2010-05-31
MCL Health-based Resolved 1999-05-01 → 1999-05-31
MCL Health-based Resolved 1999-05-01 → 1999-05-31
MCL Health-based Resolved 1990-09-01 → 1991-07-11
MCL Health-based Resolved 1990-09-01 → 1991-07-11

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOS 0.0150 µg/L 2/11 2025
Pfba 0.0110 µg/L 1/10 2025
PFBS 0.0041 µg/L 1/11 2025
Pfhxa 0.0066 µg/L 1/10 2025
PFHXS 0.0036 µg/L 1/11 2025
Pfpea 0.0073 µg/L 1/10 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Tetrachloroethylene
8.7 µg/L 174%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 55 µg/L
591/1381 SYR4 2012–2019
Trichloroethylene
6.41 µg/L 128%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 29 µg/L
579/1227 SYR4 2012–2019
1,1-Dichloroethylene
1.4 µg/L 20%
of the EPA limit 7 µg/L
worst single sample: 3.8 µg/L
539/958 SYR4 2012–2019
TTHM
34.6 µg/L 43%
of the EPA limit 80 µg/L
worst single sample: 60 µg/L
117/153 SYR4 2012–2019
Dibromoacetic Acid
3.81 µg/L
No EPA limit set
worst single sample: 4.4 µg/L
100/156 SYR4 2012–2019
Bromoform
10.12 µg/L
No EPA limit set
worst single sample: 17 µg/L
97/153 SYR4 2012–2019
Dibromochloromethane
12.2 µg/L
No EPA limit set
worst single sample: 20 µg/L
97/153 SYR4 2012–2019
Bromodichloromethane
8.26 µg/L
No EPA limit set
worst single sample: 18 µg/L
85/153 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
15 µg/L 25%
of the EPA limit 60 µg/L
worst single sample: 22 µg/L
76/156 SYR4 2012–2019
Nitrate
2712 µg/L 27%
of the EPA limit 10000 µg/L
worst single sample: 2800 µg/L
72/92 SYR4 2012–2019
Chloroform
9.25 µg/L
No EPA limit set
worst single sample: 21 µg/L
56/153 SYR4 2012–2019
Fluoride
510.5 µg/L 13%
of the EPA limit 4000 µg/L
worst single sample: 560 µg/L
40/40 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 36/36 LCR 2025
Dichloroacetic Acid
10.35 µg/L
No EPA limit set
worst single sample: 12 µg/L
34/156 SYR4 2012–2019
Trichloroacetic Acid
4.6 µg/L
No EPA limit set
worst single sample: 5.1 µg/L
31/156 SYR4 2012–2019
Monochloroacetic Acid
7.34 µg/L
No EPA limit set
worst single sample: 7.5 µg/L
22/156 SYR4 2012–2019
Barium
117 µg/L 5.9%
of the EPA limit 2000 µg/L
worst single sample: 120 µg/L
7/16 SYR4 2012–2018
Nitrate-Nitrite
436000 µg/L 4360%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 480000 µg/L
5/10 SYR4 2012–2018
Arsenic
2.425 µg/L 24%
of the EPA limit 10 µg/L
worst single sample: 2.5 µg/L
4/16 SYR4 2012–2018
Copper
62.44 µg/L 4.8%
of the EPA limit 1300 µg/L
worst single sample: 73 µg/L
4/16 SYR4 2012–2018
Combined Uranium
2.5926 µg/L 8.6%
of the EPA limit 30 µg/L
worst single sample: 2.682 µg/L
4/9 SYR4 2012–2019
Monobromoacetic Acid
4.47 µg/L
No EPA limit set
worst single sample: 4.8 µg/L
3/156 SYR4 2012–2019
Lithium
47 µg/L
No EPA limit set
 2/11 UCMR-5 2025
Selenium
2.3 µg/L 4.6%
of the EPA limit 50 µg/L
 1/16 SYR4 2012–2018
78 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHfpo-DaHeptachlorHeptachlor EpoxideLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FLORES, ROCIO
Phone
626-250-1517
Email
[email protected]

Frequently asked questions about Gswc - Bell, Bell Gardens

Is Gswc - Bell, Bell Gardens tap water safe to drink?

EPA monitoring detected 30 contaminants in Gswc - Bell, Bell Gardens's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Gswc - Bell, Bell Gardens's water?

EPA monitoring detected Tetrachloroethylene, Trichloroethylene, 1,1-Dichloroethylene, TTHM, Dibromoacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Gswc - Bell, Bell Gardens serve?

Gswc - Bell, Bell Gardens reports serving 55,050 people in California, per its EPA record.

Has Gswc - Bell, Bell Gardens had any water quality violations?

The EPA has 6 violations on file for Gswc - Bell, Bell Gardens, of which 6 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.